Currently, the Canadiens are building their forward core of the future which includes players like Nick Suzuki, Cole Caufield, Kirby Dach, and 2022 1st overall pick Juraj Slafkovsky. This is only 2/3rds of their top six and they still have two slots open. Zegras could certainly fill one of these.
Zegras is known for having chemistry with Cole Caufield, as they played on the same junior team together, and pairing the two up in the NHL could prove to be quite beneficial for the Canadiens.